A capital city (or simply capital) is the municipality enjoying primary status in a country, state, province, or other region, usually as its seat of government. A capital is typically a city that physically encompasses the offices and meeting places of its respective government; the status as capital is often designated by its law or constitution. In some jurisdictions, including several countries, the different branches of government are located in different settlements. In some cases, a distinction is made between the official (constitutional) capital and the seat of government, which is in another place.

The convergence of political and economic or cultural power is by no means universal. Traditional capitals may be economically eclipsed by provincial rivals, e.g. Nanking by Shanghai, Quebec City by Montreal, and numerous US state capitals. The decline of a dynasty or culture could also mean the extinction of its capital city, as occurred at Babylon and Cahokia.

Although many capitals are defined by constitution or legislation, many long-time capitals have no legal designation as such: for example Bern, Edinburgh, Lisbon, London, Paris, and Wellington. They are recognised as capitals as a matter of convention, and because all or almost all the country's central political institutions, such as government departments, supreme court, legislature, embassies, etc., are located in or near them.

Counties in the United Kingdom have historic county towns, which are often not the largest settlement within the county and often are no longer administrative centres, as many historical counties are now only ceremonial, and administrative boundaries are different.

A deliberately planned city that was built expressly to house the seat of government, superseding a capital city that was in an established population center. There have been various reasons for this, including overcrowding in that major metropolitan area, and the desire to place the capital city in a location with a better climate (usually a less tropical one).

A town that was chosen as a compromise among two or more cities (or other political divisions), none of which was willing to concede to the other(s) the privilege of being the capital city. Usually, the new capital is geographically located roughly equidistant between the competing population centres.

Wellington, New Zealand, which is located at the southern tip of the North Island of New Zealand, the more populous island, immediately across the Cook Strait from the South Island. The capital city was moved there from Auckland, which is much further north in the North Island, after a long argument for a more central location for parliament.[1]

Changes in a nation's political regime sometimes result in the designation of a new capital. The newly independent Kazakhstan moved its capital to the existing city of Aqmola. Naypyidaw was founded in Burma's interior as the former capital, Rangoon, was claimed to be too overcrowded.[2]

France: The French constitution does not recognise any capital city in France. By law[3]Paris is the seat of both houses of Parliament (the National Assembly and the Senate), but their joint congresses are held at the Palace of Versailles. In case of emergency, the seat of the constitutional powers can be transferred in another town, in order for the Houses of Parliament to keep seating in the same location of the President and Cabinet.

Monaco, Singapore, and the Vatican City as well as the territories of Hong Kong and Macau are city-states, and thus do not contain any distinct capital city as a whole. However, in Singapore's case, the main judiciary and legislative offices are located in the Downtown Core. Similarly, while Victoria was the capital of colonial Hong Kong, the district of Central serves as the seat of government offices today.

With the rise of modern empires and the nation-state, the capital city has become a symbol for the state and its government, and imbued with political meaning. Unlike medieval capitals, which were declared wherever a monarch held his or her court, the selection, relocation, founding, or capture of a modern capital city is an emotional event. For example:

The selection or founding of a "neutral" capital city, one unencumbered by regional or political identities, was meant to represent the unity of a new state when Ankara, Turkey; Bern, Switzerland; Canberra, Australia; Madrid; Ottawa; Washington, DC; and Wellington, New Zealand became capital cities. Sometimes, the location of a new capital city was chosen to terminate squabbling or possible squabbling between various entities, such as in the cases of Canberra, Ottawa, Washington, and Wellington.

The British-built town of New Delhi represented a simultaneous break and continuity with the past, the location of Delhi being where many imperial capitals were built (Indraprastha, Dhillika, and Shahjahanabad) but the actual capital being the new British-built town designed by Edwin Lutyens. Wellington, on the southwestern tip of the North Island of New Zealand, replaced the much more northerly city of Auckland in to place the national capital close to the South Island and hence to placate its residents, many of whom sympathies with separatism.

During the American Civil War, tremendous resources were expended to defend Washington, D.C., which actually bordered on the Confederate States of America (with the Commonwealth of Virginia), from Confederate attack even though the relatively small federal government could easily have been moved elsewhere. Likewise, great resources were expended by the Confederacy in defending the Confederate capital from attack by the Union, in its exposed location of Richmond, Virginia, barely 100 mi south of Washington.

The capital city is almost always a primary target in a war, as capturing it usually guarantees capture of much of the enemy government, victory for the attacking forces, or at the very least demoralization for the defeated forces.

In ancient China, where governments were massive centralized bureaucracies with little flexibility on the provincial level, a dynasty could easily be toppled with the fall of its capital. In the Three Kingdoms period, both Shu and Wu fell when their respective capitals of Chengdu and Jianye fell. The Ming dynasty relocated its capital from Nanjing to Beijing, where they could more effectively control the generals and troops guarding the borders from Mongols and Manchus. The Ming was destroyed when the Li Zicheng took their seat of power, and this pattern repeats itself in Chinese history, until the fall of the traditional Confucian monarchy in the 20th century. After the Qing Dynasty's collapse, decentralization of authority and improved transportation and communication technologies allowed both the Chinese Nationalists and Chinese Communists to rapidly relocate capitals and keep their leadership structures intact during the great crisis of Japanese invasion.

National capitals were arguably less important as military objectives in other parts of the world, including the West, because of socioeconomic trends toward localized authority, a strategic modus operandi especially popular after the development of feudalism and reaffirmed by the development of democratic and capitalistic philosophies. In 1204, after the Latin Crusaders captured the Byzantine capital, Constantinople, Byzantine forces were able to regroup in several provinces; provincial noblemen managed to reconquer the capital after 60 years and preserve the empire for another 200 years after that. The British forces sacked various American capitals repeatedly during the Revolutionary War and War of 1812, but American forces could still carry on fighting from the countryside, where they enjoyed support from local governments and the traditionally independent civilian frontiersmen. Exceptions to these generalizations include highly centralized states such as France, whose centralized bureaucracies could effectively coordinate far-flung resources, giving the state a powerful advantage over less coherent rivals, but risking utter ruin if the capital were taken. In their military strategies, traditional enemies of France such as Prussia (in the Franco-Prussian War of 1871) focused on the capture of Paris.